In the year 2010, the Holy Empire of Britannia is establishing itself as a dominant military country, starting with the conquest of Japan. Renamed to Area 11 after its swift defeat, Japan has actually seen considerable resistance against these tyrants in an attempt to gain back independence.

Lelouch Lamperouge, banished prince of Britannia, regrettably finds himself caught in a crossfire between the two countries’ militaries. He is able to leave, however, thanks to the timely appearance of a strange girl called C.C., who bestows upon him Geass, the “Power of Kings.”

Recognizing the huge potential of his newly found “power of absolute obedience,” Lelouch launches a risky journey as the masked vigilante referred to as Zero, leading a merciless attack versus Britannia in order to get revenge once and for all.